JSTests/test262/test/built-ins/Function/prototype/toString/proxy-async-method-definition.js

// Copyright (C) 2018 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-function.prototype.tostring
description: >
  toString of Proxy for function target does not throw (Async Method Definition)
info: |
  ...
  If Type(func) is Object and IsCallable(func) is true, then return an
  implementation-dependent String source code representation of func.
  The representation must have the syntax of a NativeFunction.
  ...

  NativeFunction:
    function IdentifierName_opt ( FormalParameters ) { [ native code ] }

features: [async-functions, Proxy]
includes: [nativeFunctionMatcher.js]
---*/

assertNativeFunction(new Proxy({ async method() {} }.method, {}));
assertNativeFunction(new Proxy({ async method() {} }.method, { apply() {} }).apply);